Finding the Fourth Proportional to 899,947.55, 1,241,940.90 and 609,647.91

Step by Step Solution

1. Step 1: Write the proportion equation
   899,947.55 : 1,241,940.90 = 609,647.91 : x
2. Step 2: Convert to fraction form
   899,947.55/1,241,940.90 = 609,647.91/x
3. Step 3: Cross multiply
   899,947.55x = 1,241,940.90 × 609,647.91
4. Step 4: Simplify right side
   899,947.55x = 757,146,674,028.52
5. Step 5: Solve for x
   x = 757,146,674,028.52/899,947.55
6. Step 6: Final answer
   x = 841,323.12